DEHYDRATION OF SUGAR-BEET PULP IN SUPERHEATED STEAM AND HOT AIR

2000 ◽  
Vol 43 (3) ◽  
pp. 685-689 ◽  
Author(s):  
Z. Tang ◽  
S. Cenkowski ◽  
W. E. Muir
Author(s):  
А.В. ДРАННИКОВ ◽  
А.А. ШЕВЦОВ ◽  
Е.В. КОСТИНА ◽  
А.М. БОРОДОВИЦЫН

Предложено математическое моделирование теплообмена при конвективной сушке свекловичного жома за счет передачи тепловой энергии перегретого пара пониженного давления через поверхность частицы продукта и эндотермического фазового перехода молекул воды из связанного состояния в газообразное. Рассмотрено кинетическое уравнение для изменения температуры частиц, исходя из баланса тепловой энергии. С учетом принятых допущений решение модели сведено к определению зависимости температуры частиц свекловичного жома по высоте слоя от температуры пара пониженного давления. Выполнена идентификация параметров модели по экспериментальным данным и приведена графическая интерпретация результатов моделирования. Модель может быть использована в системе оперативного управления технологическими параметрами процесса сушки свекловичного жома перегретым паром пониженного давления с учетом ограничений на показатели качества высушенного продукта. Mathematical modeling of heat transfer in the convective drying of sugar beet pulp is suggested by transferring the thermal energy of superheated steam of reduced pressure through the surface of the product particle and the endothermic phase transition of water molecules from the bound state to gaseous. When stating the simulation problem, the kinetic equation for changing the temperature of a particle is considered, starting from the balance of thermal energy. Taking into account the assumed assumptions, the solution of the model first reduces to determining the temperature dependence of the particle size of the sugar beet pulp in the height of the layer from the temperature of the steam of the reduced pressure. When drying the sugar beet pulp in a fluidized bed, the temperature of the particles is averaged over the residence time in different parts of the drying chamber, and the kinetic equation is used for the steam temperature in each section of the drying chamber that is resolved relative to the temperature of the particle. Identification of model parameters from experimental data was carried out and a graphic interpretation of simulation results was given. The model can be used in the operational control system for technological parameters of the drying process for sugar beet pulp by superheated steam of reduced pressure, taking into account the limitations on the quality indicators of the dried product.


Author(s):  
Xin Huang ◽  
Dong Li ◽  
Li-jun Wang ◽  
Benu Adhikari ◽  
Xiao Dong Chen

Abstract The effect of drying methods on the rheological properties (apparent viscosity, storage (G′) and loss (G″) moduli, creep behavior) of sugar beet pulp pectin (SBPP) was investigated using steady shear, frequency sweep, activation energy and creep-recovery tests. SBPP was extracted from sugar beet and dried using freeze (FD), hot air (HD), vacuum (VD) and spray (SD) drying methods. The HD sample showed highest apparent viscosity and the VD sample had the highest activation energy. The 1 % (w/v) samples had higher activation energy than 2 % (w/v) samples. The G′ and G″ versus angular frequency data followed the Power Law model reasonably well (R2 > 0.915). The FD sample deformed the most during the creep test.


Author(s):  
S.V. Meshcheryakov ◽  
◽  
I.S. Eremin ◽  
D.O. Sidorenko ◽  
M.S. Kotelev ◽  
...  
Keyword(s):  

2016 ◽  
pp. 565-570
Author(s):  
Huang Qin ◽  
Zhu Si-ming ◽  
Zeng Di ◽  
Yu Shu-juan

Sugar beet pulp (SBP) was used as low value adsorbent for the removal of calcium from hard water. Batch experiments were conducted to determine the factors affecting adsorption of the process such as pH value and Ca concentration. The adsorption equilibrium of Ca2+ by the SBP is reached after 100min and a pseudo second-order kinetic model can describe the adsorption process. The initial concentrations of Ca varied from 927 to 1127mgCa2+/L. A dose of 30g/L sugar beet pulp was sufficient for the optimum removal of calcium. The overall uptake of Ca ions by sugar beet pulp has its maximum at pH=8. The adsorption equilibrium data fitted well with the Langmuir adsorption isotherm equation.


2012 ◽  
pp. 756-761 ◽  
Author(s):  
Miroslav Hutnan ◽  
Štefan Tóth ◽  
Igor Bodík ◽  
Nina Kolesárová ◽  
Michal Lazor ◽  
...  

The possibility of joint treatment of spent sugar beet pulp and wastewater from a sugar factory was studied in this work. Works focused on processing of spent sugar beet pulp separately or together with other substrates can be found in the literature. In the case of some sugar factories, which have spare capacity in the anaerobic reactor on an anaerobic-aerobic wastewater treatment plant, joint processing of spent sugar beet pulp and wastewater from the sugar factory might be an interesting option. The results of the operation of a pilot plant of an anaerobic reactor with a capacity of 3.5 m3 are discussed. Operation of the pilot plant confirmed the possibility of cofermentation of these materials. The organic loading rate achieved in the anaerobic reactor was higher than 6 kg/(m3·d) (COD), while more than half of the load was provided by spent sugar beet pulp. The addition of sugar beet pulp decreased the concentration of ammonia nitrogen in the anaerobic reactor and it was even necessary to add nitrogen. However, the nitrogen content in sludge water depends on the C:N ratio in the processed sugar beet pulp, therefore this knowledge cannot be generalized. About 1.5 to 2-fold biogas production can be expected from the cofermentation of wastewater with sugar beet pulp in an anaerobic reactor, compared with the biogas production from just wastewater treatment.


Biofuels ◽  
2021 ◽  
pp. 1-8
Author(s):  
Saida Ibragić ◽  
Narcisa Smječanin ◽  
Ranko Milušić ◽  
Mirza Nuhanović

2021 ◽  
Vol 13 (9) ◽  
pp. 5317
Author(s):  
Sonja Simić ◽  
Jovana Petrović ◽  
Dušan Rakić ◽  
Biljana Pajin ◽  
Ivana Lončarević ◽  
...  

Sugar beet pulp (SBP) is a by-product of the sugar industry in which the dietary fiber content ranges from 73% to 80%. Compared to cereal fibers mainly used in biscuit production, sugar beet fibers are gluten free and have a perfect ratio of 2/3 insoluble fiber. In this work, sugar beet pulp was extruded with corn grits (ratios of corn grits to sugar beet pulp in extrudates were 85:15, 70:30, and 55:45), and the obtained sugar beet pulp extrudates (SBPEs) were used for improving the nutritional quality of cookies. The wheat flour in cookies was replaced with SBPEs in the amount of 5, 10, and 15%. The influence of three factors (the percentage of sugar beet pulp in the SBPEs, the size of the SBPE particles, and the percentage of wheat flour substituted with SBPEs) and their interactions on the nutritional quality of cookies, as well as their physical and sensory characteristics are examined using the Box–Behnken experimental design. The addition of extruded sugar beet pulp (SBPEs) significantly increased the amount of total dietary fiber and mineral matter of cookies. On the whole, the addition of SBPEs increased cookie hardness, but the hardness decreased with an increase in extrudate particle size. Sensory characteristics (except for the taste) were the most influenced by extrudate particle size.


Sign in / Sign up

Export Citation Format

Share Document